Trolley.



G. 0. BURWELL & C. M. KURTZ.

TROLLEY. v

APPLICATION FILED SEPT. I9. |914.

1,154,234. y Patented sept. 21, 1915.

@/yw B52/71%@ A TTORNEI lf E.,

BEIILEIUE, .PENNSIYLLANIA.

LTROLLEY.

Salt-Lake City, iin'the county ofV Salt 'Lake and State of Utah, anclgCH-Annns M. KURTZ, a citizen of :the United States, and fresiding :at Bellevue, Pennsylvania, .have invented certain ,new and useful `Improvements in Trolleys, of which the following isaspeciiication.

,f @u-rpinvention relates to l overhead .trolleys for Aelectric zrailways, and has for :its obJect :toiprovide af'fsimple, :efiicient and-.economical trolley whereby vasinore pos1tive=electr1c circuit. is formed throughlthe :trolley :and la smeans provided :to prevent -.injury lto the stay .wires of the line `should ythe `trolley leave thezline wire.

The V.invention also :has :for )its .object to .provide a'lmounting :for the ftrolley wheel which will Iallow saidA Wheel to automatically adapt itself to curves andfswitchesin tthe'line wireitovpreventathe wheel-rfrom leavxing the wire, and .a v'bushing :forming an oil cup itherefor.

These objects -Weaccomplish with fthe-.de-

viee illustrated in the accompanying. draw- .ings in ewhich similailetters and :numerals of :reference :indicate -like :parts ethroughout .the several ,-igures, Land :as `described in -the specification-forming .agpart ofsthis applic-ation and pointed-.outin therappended claims. :In ythe rdrawings in which 4iveihaveshown a substantial embodimentof .our rinvention, Figure l .isa side elevation of the device, parts broken away. iFig. `2 Lis a horizontal section on line a: m of Fig. 1.. #Eig 3 fis a longitudinal section of the ibushing Iifor the wheel. Fig. l is a plan'view-ofzoneof the contact springs, and Fig. 5 is a side elevation of2one of the 'detachable-contact.shoes.

Referring specifically to the drawings, A, denotes a fragment of a trolley pole which is mounted in the ordinary manner on the car. In the free end of said pole our trolley harp B is secured. The said harp B consists of a standard 1, positioned at an incline when the trolley is on the line Wire and having horizontally disposed arms 2, between Which arms the trolley Wheel C is journaled on the detachable axle or shaft 10. The arms 2 of the harp have longitudinally disposed slots t cut therein, With the outer end Wall of each slot beveled outspecification of Lettersrratent. @atentedfsenptfgl, 13H5Q App 1i cationled; September. 19,3914. f,fS,e1.'-iaENo. 86%,511 i wardly as at 5-fand `thednner -orsbackaportion o'f each slotlenlarged b.y ,acireular hole at '6. The circular iend -of .each :slot .is furfther `.extended fiby a tapped ho'le 71, Within which 'rhole .1a portion vof ithe :axle fspringS f8 areseated. The upperffedgeof eaehvof said arms Q'is above .zthe axis sdf ifsaid itrolley wheel; and -near the junction of v:said :arms said edgesmre :lowered I b11t;atadl :points are -above fthe `anis offsaid avheel, aand :act as :a .guard to vprevent stay zwires from being `caught andvbroken fshould atheztrolley wheel leave .the aline.` "With :our .construction the l.trolley pole aand Wheel will gpass runder the fguard )wires 1Without injury to the guard or 1li ne wires pshould athe @trolley ileave i the :line wire.

lhe `wvheel C is loosely imounted ewan-axle .Ovzhichisearried bysaidarms `The; end ,porti ons: ofsaid axle; are squared as shownaat :121, and-.operate ..in -said slots 4;. ,The said Awheel :C :isqprm'ided with ia spoohshaped .bushing 712.=,having.its#medial portionrspaeed from rthe :hub 13 of. said wv-heelto gprovideg an .OiLChamber '14. An oil ingress 3 :is bored ythrough the :hub 13 Lby which Ik:oil iis inserted within. sai d :chamber 14,:fand oil holes `.16: are providedithrough .the mediahportionof 'said bushing 12 toallow the oil fto lubricate :the said axle 10. The ends of said bushing 12 `and of.` said :hub f13; are-.given ,a semispherical .form to fallow Jhorizontal g play 1, or inleven-lent .of v/the ,axle j10 and T.thereby of :the :Wheel f C, ,topermitfsaid wheelto follow thezline -Wire Yon fcurves .andswitches To .accommodate ,this horizontal movement -of said .axle ,at 4eitherend,,said slots are beveled as fdescribed at, and said springs arecarried in said slots r bearing 4against the squared -;portion of said aXle 10 to normally hold the a-Xle atransverse sto said rarms :2 and Y:to :yield .rati either end, thereby allowing the said wheel C to more closely follow the line Wire as hereinbefore described. This construction allows us to use a larger Wheel than is in ordinary use. Annular grooves 15 are cut in the web portion on each side of said Wheel C within which are operated the detachable Contact shoes D. Said shoes are carried and held in contact with said wheel C by the Hat springs 17 which are fastened on the inside of said arms 2. Said contact shoes have one end portion extended laterally, as at 18, with the medial portion rounded, as at 19,

that said contact shoes maybe detachably` secured in the free ends of saidr springs 17 horizontally disposed slots 21 are cut in.

said springs which allow said shoes to be;

inserted from the .inner side. of said springs and turned on said rounded portion 19 as a pivot and the extendedxportions 18'to engage the outer faces of the springs with friction enough to hold them in place and the'sloping sides of the enlarged ends 20 to bear in said annular grooves 15. vWe thus provide a positive circuit for the electric current from the line wirethrough the trolley without the current passing through the lubricatedaxle of the wheel as is usual; When said contact shoes YD, which are preferably made of copper, wear out they maybe replaced with others by pulling the free ends of said springs 17 out- .ward or away from their proximity to said wheel Gand` the new shoes secured in place. In assembling our device,v the axle 10 is inserted through the circular hole 6 in the arms 2 and moved in the longitudinal slots 4 contiguous the beveled walls 5. The springs 8 'are inserted at one end into'the tapped hole 7 with their other ends bearing against the squared portion 11 of said axle. rI`he contact shoes D are inserted from the back or rear side of the flat springs 17 by the fportion 18 of-said shoes being passed through 'the'horizontal slots21, and turned on the pivot portion 19 in transverse position to said springs, with the enlarged end QOmade to bear in the annular' grooves 15. Y

Having thus described our invention we desire to secure` by Letters Patent and claim z-n Y Y '-1."In a'trolley the combination of a harp; an 'axle mountedtherein; a wheel carried lon said axle; annular grooves in thewebV portion of said wheel; springs secured at one end t'o said harp and having longitudinally disposed diamond shaped slots in their free vend portions; and detachable contact shoes carriedY in vsaid sloots' and held in bearing contact against said wheel and Within said Copies ofthis patent may be obtained for l 2. In a trolley the combination of a harp;

a wheel Amounted therein having annular grooves inV the web portion thereof ;`at

`springs having one end of each secured to said harp and provided with a diamond vshapedslot in theirother ends; and contactV points having one portion diamond shaped to pass-freely through said diamond shaped slots and a cone'shaped larger portion con-V nected to said diamond shaped portion lar -grooves by said springs.

3. In a trolley the combination of a harp;

to an adjacent one 'of said arms and adapted to conduct electricity; a detachable contact vshoe carried in` the free end of each of said springs and bearing against said. wheel within one of said .grooves ata point between 'the axle of said wheel and the point on the periphery of said wheel Where it bears against'the line wire.

5. In a trolley the combination of a harp; a' wheel mounted therein having annular which contact points arerheld'in said aiinu` -an axle mounted therein; a wheel mounted grooves cut in the web portion thereof; springs secured'on the inner side of the arms of said Vharp with the free ends above the 'arms of the harp and provided .with 'longitudinal slots therein; and detachable contact points carried by said'springs within said slots and` bearing against said Wheel within said annular' grooves.

v In testimony whereof we'have aiiixed our signatures inV presencey ofotwo witnesses.

GEORGE OL'BURWELL. l

d CHARLES M; KURTZ. lVitn'esses: d SAMRANEY; JOHN MARSH.

ve cents each, by addressing the Commissione: of Patents. Washington, D. G.'j Y 

